AutoCodes – Hyundai – P0704 Hyundai

P0704 Hyundai Code - Clutch Switch Signal Error

Quick Answer

When the clutch pedal is depress the voltage signal from the clutch switch to the Engine Control Module (ECM) is low. Common causes include Faulty Clutch Switch, Misadjusted Clutch Switch, Clutch Switch harness is open or shorted. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0704 Hyundai indicates Clutch Switch Signal Error.
Common causes: Common causes include Faulty Clutch Switch, Misadjusted Clutch Switch, Clutch Switch harness is open or shorted.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 18,184

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0704 Hyundai Description

When the clutch pedal is depress the voltage signal from the clutch switch to the Engine Control Module (ECM) is low. If the ECM does not see this change from high to low when the vehicle is over 0 mph, the ECM sets code P0704.

OBDII Code P0704 Hyundai - Clutch Switch Signal Error - AutoCodes.com — P0704 Hyundai Code - Clutch Switch Signal Error

What does this mean?

What are the Possible Causes of the DTC P0704 Hyundai?

Faulty Clutch Switch
Misadjusted Clutch Switch
Clutch Switch harness is open or shorted
Clutch Switch circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0704 Hyundai?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

Check clutch switch adjustment, the switch should open and close when the clutch pedal is depress. If the switch is properly adjusted, replaced the clutch switch to resolve problem.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0704 Hyundai code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0704 Hyundai code?

Need more information on how to fix the P0704 Hyundai code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0704 Hyundai code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0704 Hyundai Code

1. What are the common symptoms of OBDII code P0704 in a Hyundai related to the clutch switch signal error?

Common symptoms include difficulty starting the vehicle, inability to start the engine, and potential issues with the cruise control system.

2. What are the possible causes of the P0704 code in a Hyundai?

The P0704 code in a Hyundai is typically caused by a faulty clutch switch, a damaged clutch switch wiring harness, or a malfunctioning engine control module (ECM).

3. How can I diagnose the P0704 code in my Hyundai related to the clutch switch signal error?

You can diagnose the P0704 code by using an OBDII scanner to retrieve the trouble codes, inspecting the clutch switch and its wiring for any visible damage, and testing the clutch switch with a multimeter for continuity.

4. What are some repair tips for fixing the P0704 code in a Hyundai?

To repair the P0704 code, you can start by replacing the faulty clutch switch, repairing or replacing any damaged wiring, and resetting the ECM to clear the trouble code.

5. Can I drive my Hyundai with the P0704 code related to the clutch switch signal error?

It is not recommended to drive your Hyundai with the P0704 code present, as it can lead to potential safety issues and cause further damage to the vehicle's components.

6. How much does it typically cost to repair the P0704 code in a Hyundai at a dealership or a repair shop?

The cost of repairing the P0704 code in a Hyundai can vary depending on the extent of the issue and the labor rates of the dealership or repair shop. It is advisable to get multiple quotes for comparison.

7. Are there any preventive measures I can take to avoid the P0704 code related to the clutch switch signal error in my Hyundai?

Regularly inspecting the clutch switch and its wiring for any signs of wear or damage, and addressing any issues promptly can help prevent the occurrence of the P0704 code in your Hyundai.

8. How long does it typically take to repair the P0704 code in a Hyundai?

The repair time for the P0704 code in a Hyundai can vary depending on the exact cause of the issue and the expertise of the technician. It can range from a quick fix to a more involved repair.

9. Will resetting the trouble codes using an OBDII scanner fix the P0704 code related to the clutch switch signal error in my Hyundai?

Resetting the trouble codes may temporarily clear the P0704 code, but it is important to diagnose and address the underlying issue causing the code to prevent it from reoccurring.

10. Can I fix the P0704 code related to the clutch switch signal error in my Hyundai myself, or should I seek professional help?

While some DIY enthusiasts may be able to diagnose and repair the P0704 code themselves, it is recommended to seek professional help if you are not familiar with automotive diagnostics and repairs to ensure the issue is properly resolved.